[Bug 1541902] Re: [FFe] Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Launchpad Bug Tracker]

This bug was fixed in the package qemu - 1:2.6.1+dfsg-0ubuntu2

---------------
qemu (1:2.6.1+dfsg-0ubuntu2) yakkety; urgency=medium

  * Enable GPU Passthru for ppc64le (LP: #1541902)
    - 0001-spapr-ensure-device-trees-are-always-associated-with.patch
    - 0002-spapr_pci-Use-correct-DMA-LIOBN-when-composing-the-d.patch
    - 0003-spapr_iommu-Finish-renaming-vfio_accel-to-need_vfio.patch
    - 0004-spapr_iommu-Move-table-allocation-to-helpers.patch
    - 0005-vmstate-Define-VARRAY-with-VMS_ALLOC.patch
    - 0006-spapr_iommu-Introduce-enabled-state-for-TCE-table.patch
    - 0007-spapr_iommu-Migrate-full-state.patch
    - 0008-spapr_iommu-Add-root-memory-region.patch
    - 0009-spapr_pci-Reset-DMA-config-on-PHB-reset.patch
    - 0010-spapr_pci-Add-and-export-DMA-resetting-helper.patch
    - 0011-memory-Add-reporting-of-supported-page-sizes.patch
    - 0012-memory-Add-MemoryRegionIOMMUOps.notify_started-stopp.patch
    - 0013-intel_iommu-Throw-hw_error-on-notify_started.patch
    - 0014-spapr_iommu-Realloc-guest-visible-TCE-table-when-sta.patch
    - 0015-vfio-spapr-Add-DMA-memory-preregistering-SPAPR-IOMMU.patch
    - 0016-vfio-Add-host-side-DMA-window-capabilities.patch
    - 0017-vfio-spapr-Create-DMA-window-dynamically-SPAPR-IOMMU.patch
    - 0018-spapr_pci-spapr_pci_vfio-Support-Dynamic-DMA-Windows.patch
    - 0019-vfio-spapr-Remove-stale-ioctl-call.patch
    - 0020-spapr-Fix-undefined-behaviour-in-spapr_tce_reset.patch
    - 0021-memory-Fix-IOMMU-replay-base-address.patch

 -- Jon Grimm <jon.grimm at canonical.com>  Fri, 16 Sep 2016 14:14:47 -0500

** Changed in: qemu (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1541902

Title:
  [FFe] Enable DDW on qemu aiming GPU passthrough performance on Ubuntu
  KVM

Status in qemu package in Ubuntu:
  Fix Released

Bug description:
  == Comment: #0 - Breno Henrique Leitao <brenohl at br.ibm.com> - 2016-02-04 10:48:25 ==
  This is a feature to track DDW support on Qemu/kvm passthrough. This is a feature to improve performance when using GPUs on virtual machines.

  The kernel pieces are already on version 4.2, and now we need the
  pieces on qemu.

  This should be sent upstream in 2 weeks, and submission URL pasted
  here.

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